package/mac80211/patches/540-ath9k_bb_hang_check_fix.patch

   1
   2 --- a/drivers/net/wireless/ath/ath9k/main.c
   3 +++ b/drivers/net/wireless/ath/ath9k/main.c
   4 @@ -251,6 +251,9 @@ int ath_set_channel(struct ath_softc *sc
   5         if (!ath_stoprecv(sc))
   6                 stopped = false;
   7
   8 +       if (!ath9k_hw_check_alive(ah))
   9 +               stopped = false;
  10 +
  11         /* XXX: do not flush receive queue here. We don't want
  12          * to flush data frames already in queue because of
  13          * changing channel. */
  14 @@ -602,7 +605,15 @@ void ath9k_tasklet(unsigned long data)
  15
  16         spin_lock(&sc->sc_pcu_lock);
  17
  18 -       if (!ath9k_hw_check_alive(ah))
  19 +       /*
  20 +        * Only run the baseband hang check if beacons stop working in AP or
  21 +        * IBSS mode, because it has a high false positive rate. For station
  22 +        * mode it should not be necessary, since the upper layers will detect
  23 +        * this through a beacon miss automatically and the following channel
  24 +        * change will trigger a hardware reset anyway
  25 +        */
  26 +       if (ath9k_hw_numtxpending(ah, sc->beacon.beaconq) != 0 &&
  27 +           !ath9k_hw_check_alive(ah))
  28                 ieee80211_queue_work(sc->hw, &sc->hw_check_work);
  29
  30         if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)